 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.internal.localstore;

 import org.eclipse.core.internal.resources.Resource;
 import org.eclipse.core.runtime.IProgressMonitor;

 /**
  * Visits a unified tree, and throws a ResourceChangedException on the first
  * node that is discovered to be out of sync. The exception that is thrown
  * will not have any meaningful status, message, or stack trace. Nodes
  * discovered to be out of sync are not brought to be in sync with the workspace.
  */
 public class IsSynchronizedVisitor extends CollectSyncStatusVisitor {
     static class ResourceChangedException extends RuntimeException {
         private static final long serialVersionUID = 1L;
     }

     protected static ResourceChangedException exception = new ResourceChangedException();

     /**
      * Creates a new IsSynchronizedVisitor.
      */
     public IsSynchronizedVisitor(IProgressMonitor monitor) {
         super("", monitor); //$NON-NLS-1$
 }

     /**
      * @see CollectSyncStatusVisitor#changed(Resource)
      */
     protected void changed(Resource target) {
         throw exception;
     }
 }

